CH373170A - Process for the production of a tubular plastic body provided with an external metal armature and device for carrying out the process - Google Patents

Process for the production of a tubular plastic body provided with an external metal armature and device for carrying out the process

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Publication number
CH373170A
CH373170A CH8045359A CH8045359A CH373170A CH 373170 A CH373170 A CH 373170A CH 8045359 A CH8045359 A CH 8045359A CH 8045359 A CH8045359 A CH 8045359A CH 373170 A CH373170 A CH 373170A
Authority
CH
Switzerland
Prior art keywords
mold
centrifugal
plastic
plastic body
centrifugal mold
Prior art date
Application number
CH8045359A
Other languages
German (de)
Inventor
Hess Karl
Original Assignee
Sprecher & Schuh Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sprecher & Schuh Ag filed Critical Sprecher & Schuh Ag
Priority to CH8045359A priority Critical patent/CH373170A/en
Publication of CH373170A publication Critical patent/CH373170A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B29C70/323—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould
    • B29C70/326—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould by rotating the mould around its axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • B29C41/045—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts

Description

  

  
 



   Verfahren zur Herstellung eines mit einer äusseren Metallarmatur versehenen, rohrförmigen Kunststoffkörpers und Einrichtung zur Durchführung des Verfahrens
In der Elektrotechnik finden rohrförmige, mit äusseren Armaturen versehene Isolierkörper vielfach Verwendung. Es ist bekannt, die Armaturen solcher Körper durch   Aufschrauben,      Verstiften,    Einbördeln und dergleichen oder mittels Kittung zu   beèstigen.   



  Alle diese bekannten Konstruktionen benötigen, abgesehen von der gesonderten Herstellung der   Arma    turen und des eigentlichen Rohrkörpers, einen besonderen Arbeitsvorgang für das Befestigen der Armaturen und fordern eine entsprechende Masshaltigkeit an den Berührungsstellen der zu verbindenden Teile.



   Zweck der   vorlielgenden    Erfindung ist es, eine rationellere   Methode    zu zeigen, nach der solche Körper herzustellen sind unter   gleichzeitiger    Verbesserung ihrer mechanischen Eigenschaften. Gegenstand der Erfindung sind ein Verfahren zur Herstellung eines mit einer äusseren Metallarmatur versehenen, rohrförmigen Kunststoffkörpers im   Schleuderverfahren,    wobei die äussere Armatur einen Teil der   Schlbudjer-    form   bildet,    und während des   Schleudervorganges    der Kunststoff sich innig mit der äusseren Armatur verbindet und aushärtet; sowie eine Einrichtung   zur    Durchführung des   Verfahrens    und ein nach dem Verfahren erzeugter Körper.



   Ein   Ausfährungsbeispiel    der Erfindung ist an Hand der Zeichnung   nachstehend    erläutert.



   Fig. 1 zeigt eine Ausführungsform der ganzen Einrichtung zur Ausübung des Verfahrens, wobei ihre wesentlichen Teile im Schnitt dargestellt sind.



   Fig. 2 ist die   Seitenlansicht      eines    mit   Metallkappen    versehenen,   rohrförmigen    Kunststoffkörpers, wie er mit Hilfe der Einrichtung und gemäss dem nachstehend beschriebenen, Verfahren hergestellt werden kann.



     Erfindungsgemäss    bilden beim vorliegenden Verfahren die äusseren, z. B. kappenförmigen Metallarmaturen des Rohrkörpers einen Teil der Form, in welche der Kunststoff vorzugsweise flüssig eingebracht und   dann    geschleudert wird. Vor dem Schleudern wird zur Verstärkung der   Kunststoffwandung    beispielsweise ein hohlzylindrischer Wickel aus Glasfasergewebe in   die    Schleuderform gelegt.

   Während   des    Schleudervorganges   dringt    der flüssige Kunststoff unter der Wirkung der Zentrifugalkraft durch die Poren des Gewebes hindurch, umhüllt, die   Gewebefasern    vollständig und   verbindet    sich ebenfalls innig mit den zylindrischen Innenflächen der   Metallarmaturen,    welche so einen Teil des Kunststoffkörpers bilden. Das nachfolgende Aushärten des Kunststoffes wird in üblicher Weise durch Erwärmen gefördert.



     Der    besondere Vorteil dieser neuen Methode liegt darin, dass die Herstellung des   KunststofiErohres    und dessen inniges   Verbinden    mit   den      Metallarmaturen    in einem einzigen Arbeitsvorgang erfolgen. Man erreicht dadurch nicht nur eine bedeutende Zeitersparnis bei der Herstellung,   sondern    auch eine mechanisch bessere und gasdichte Verbindung zwischen Rohr und Armatur.



   Zur Durchführung des   Verfahlrens    eignet sich    eine Einrichtung in Form einer r Maschine, wie sie in    Fig. 1 als Ausführungsbeispiel skizziert ist. 1 ist ein Ständer, in dessen mittlerem Arm eine Spindel 3 gelagert ist, die durch den Motor 2 in rasche Drehung versetzt werden kann. Auf   dieser    Spindel sitzt die auswechselbare   Schieuderform    4, welche mit einem durch die   Spindelachse    hindurch nach   unten    verlängertem Ausstosser 5 versehen ist.

   Am oberen Armdes Ständers ist eine Heizvorrichtung 6 verschiebbar gehalten, die in der Pfeilrichtung nach   unten    bewegt und so über die Schleuderform   geschoben    werden kann. 7 ist eine Einfüllvorrichtung, bestehend aus  einem Vorratsgefäss mit einem schwenkbaren Ausflussrohr 8 zur Aufnahme des Kunstharzes. Zur Betätigung des Ausstossers 5 ist darunter der Kolben 9 angeordnet, welcher hydraulisch oder pneumatisch gesteuert werden kann.



   Um einen mit   Metaflarmaturen    versehenen Kunststoffkörper herzustellen, wird in nachstehender Weise und Reihenfolge verfahren:
Untere Metallkappe 10 auf den Boden der Schleuderform 4, das heisst auf den Teller der Ausstossvorrichtung 5   legen - hohlzylindrischen    Wickel 11 aus Glasfasergewebe in die Form   schieben -    obere Metallkappe 12   einsetzen - Ausflussrohr    8 gegen die Öffnung der Kappe 12 richten - die notwendige Menge Kunststoff, z.

   B. ein schnell härtendes Epoxyharz, aus dem Vorratsgefäss 7 in die Form fliessen   lassen - Schleuderform    4 in rasche Umdrehung   versetzen - Ausflussrohr    8 auf die Seite   schwenken - Heizvorrichtung    herunterlassen, bis sie in die strichpunktiert eingezeichnete Lage gelangt, und dann die gefüllte Schleuderform während der für das Aushärten des Harzes notwendigen Zeit (in der Regel 1 bis 2 Minuten)   erwärmen - Motor    2   abstellen - Heizvorrichtung    6 hochziehen - Kolben 9 betätigen, wodurch der fertige Rohrkörper von der Ausstossvorrichtung 5 nach oben aus der Schleuderform 4 herausgeschoben wird.



   Die ganze Einrichtung ist nun wieder für den nächsten Arbeitszyklus bereit.



   Um die Produktion zu erhöhen, kann die Einrichtung in Form einer Spezialmaschine auch mit zwei oder mehreren Paaren Schleuderformen ausgerüstet sein, die gleichzeitig benützt werden, indem abwechslungsweise in die einen Formen die Armaturen und Verstärkungsgewebe eingebracht werden, während die andern Formen geschleudert und geheizt werden.



   Die Maschine kann auch mehr oder weniger automatisiert sein, indem die einzelnen Operationen und deren Ablauf, z. B. das Einbringen der Armaturen und Einfüllen einer ganz bestimmten Menge flüssigen Harzes in die Form, die Dauer des Schleuderns und Heizens sowie das Ausstossen des Kunststoffkörpers aus der Form, durch geeignete Steuerorgane selbsttätig vollzogen werden. Bei einer solchen automatisierten Maschine mit mehreren Formen kann die Anzahl der notwendigen Heiz,- Schleuderund   Einfülivorrichtungen    kleiner sein als die Gesamtanzahl der verwendeten Schleuderformen, da ja nicht alle Formen gleichzeitig geschleudert zu werden brauchen. In gewissen Fällen kann es vorteilhaft sein, auch die räumliche Verschiebung der Schleuderformen vom einen Arbeitsgang zum andern   voll-    ständig zu automatisieren.



   Kunststoffkörper mit äusseren Metallkappen gemäss Fig. 2, wie sie nach diesem Verfahren mittels der beschriebenen Vorrichtung hergestellt sind, eignen sich besonders als Patronenkörper für elektrische   Hochleistungs-Schmelzsicherungen.      



  
 



   Process for the production of a tubular plastic body provided with an external metal armature and device for carrying out the process
In electrical engineering, tubular insulating bodies provided with external fittings are widely used. It is known to fasten the fittings of such bodies by screwing, pinning, crimping and the like or by means of cement.



  All these known constructions require, apart from the separate manufacture of the Arma tures and the actual tubular body, a special operation for attaching the fittings and require a corresponding dimensional accuracy at the points of contact of the parts to be connected.



   The purpose of the present invention is to show a more rational method by which such bodies can be produced while at the same time improving their mechanical properties. The invention relates to a method for producing a tubular plastic body provided with an outer metal armature using the centrifugal method, the outer armature forming part of the Schlbudjer- form, and during the centrifugal process the plastic is intimately bonded to the outer armature and cures; as well as a device for performing the method and a body produced by the method.



   An exemplary embodiment of the invention is explained below with reference to the drawing.



   Fig. 1 shows an embodiment of the entire device for performing the method, its essential parts are shown in section.



   2 is a side view of a tubular plastic body provided with metal caps, as can be produced with the aid of the device and according to the method described below.



     According to the present method, the outer, z. B. cap-shaped metal fittings of the tubular body part of the mold, in which the plastic is preferably introduced in liquid form and then hurled. Before centrifuging, for example, a hollow cylindrical roll made of glass fiber fabric is placed in the centrifugal mold to strengthen the plastic wall.

   During the centrifugal force, the liquid plastic penetrates through the pores of the fabric, envelops the fabric fibers completely and also connects intimately with the cylindrical inner surfaces of the metal fittings, which thus form part of the plastic body. The subsequent hardening of the plastic is promoted in the usual way by heating.



     The particular advantage of this new method is that the manufacture of the plastic pipe and its intimate connection with the metal fittings take place in a single operation. This not only saves a significant amount of time during manufacture, but also creates a mechanically better and gas-tight connection between the pipe and the fitting.



   A device in the form of a machine, as sketched as an exemplary embodiment in FIG. 1, is suitable for carrying out the procedure. 1 is a stand in the middle arm of which a spindle 3 is mounted, which can be set in rapid rotation by the motor 2. The exchangeable shooting mold 4, which is provided with an ejector 5 which is extended downward through the spindle axis, is seated on this spindle.

   A heating device 6 is slidably held on the upper arm of the stand and can be moved downward in the direction of the arrow and thus pushed over the centrifugal mold. 7 is a filling device, consisting of a storage vessel with a pivotable outlet pipe 8 for receiving the synthetic resin. To actuate the ejector 5, the piston 9 is arranged underneath, which can be controlled hydraulically or pneumatically.



   In order to produce a plastic body provided with Metafl fittings, proceed in the following manner and order:
Place the lower metal cap 10 on the bottom of the centrifugal mold 4, i.e. on the plate of the ejection device 5 - push the hollow cylindrical roll 11 made of glass fiber fabric into the mold - insert the upper metal cap 12 - direct the outlet pipe 8 against the opening of the cap 12 - the necessary amount of plastic, z.

   B. a fast-curing epoxy resin, let flow from the storage vessel 7 into the mold - set the centrifugal mold 4 in rapid rotation - swivel the discharge pipe 8 to the side - lower the heating device until it reaches the dot-dashed position, and then the filled centrifugal mold during the heat up the time necessary for the resin to cure (usually 1 to 2 minutes) - turn off engine 2 - pull up heating device 6 - actuate piston 9, whereby the finished tubular body is pushed upwards out of centrifugal mold 4 by ejector 5.



   The whole facility is now ready for the next work cycle.



   In order to increase production, the facility in the form of a special machine can also be equipped with two or more pairs of centrifugal molds that are used at the same time by alternately inserting the fittings and reinforcing fabric into one mold while the other molds are centrifuged and heated.



   The machine can also be more or less automated by the individual operations and their sequence, e.g. B. the introduction of the fittings and filling a certain amount of liquid resin into the mold, the duration of the centrifuging and heating and the ejection of the plastic body from the mold, can be carried out automatically by suitable controls. In such an automated machine with several molds, the number of necessary heating, spinning and filling devices can be smaller than the total number of spinning molds used, since not all molds need to be spun at the same time. In certain cases it can be advantageous to fully automate the spatial shifting of the centrifugal molds from one work step to another.



   Plastic bodies with outer metal caps according to FIG. 2, as they are produced by this method using the device described, are particularly suitable as cartridge bodies for high-performance electrical fuses.

Claims (1)

PATENTANSPRÜCHE I. Verfahren zur Herstellung eines mit einer äusseren Metallarmatur versehenenl, rohrförmigen Kunststoffkörpers im Schleuderverfahren, dadurch gekennzeichnet, dass die äussere Armatur einen Teil der Schleuderform bildet, und während des Schleudervorganges der Kunststoff sich innig mit der äusseren Armatur verbindet und aushärtet. PATENT CLAIMS I. A process for the production of a tubular plastic body provided with an outer metal armature using the centrifugal method, characterized in that the outer armature forms part of the centrifugal mold, and during the centrifugal process the plastic is intimately bonded to the outer armature and hardens. II. Einrichtung zur Durchführung des Verfahrens nach Patentanspruch I, gekennzeichnet durch den Zusammenbau einer rotierenden, die Schleuderform tragenden Spindel, einer Ausstossvorrichtung für den Kunststoffkörper, einer Heizvorrichtung für die Schleuderform und einer Einfüllvorrichtung, um eine vorbestimmte Menge flüssigen Kunststoffes der Schleuderform zuzuführen. II. Device for performing the method according to claim I, characterized by the assembly of a rotating spindle carrying the centrifugal mold, an ejection device for the plastic body, a heating device for the centrifugal mold and a filling device to feed a predetermined amount of liquid plastic to the centrifugal mold. III. Rohrförmiger, mit einer äusseren Metallarmatur versehener Kunststoffkörper, erzeugt nach dem Verfahren gemäss Patentanspruch I. III. Tubular plastic body provided with an outer metal fitting, produced according to the method according to claim I. UNTERANSPRÜCHE 1. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass zur mechanischen Verstärkung des Kuqnststoffkörpers Glasfasern so in die Schleuderform eingelegt werden, dass diese Fasern nach dem Schleudervorgang vollständig im Kunststoff eingebettet sind. SUBCLAIMS 1. The method according to claim I, characterized in that for mechanical reinforcement of the plastic body glass fibers are inserted into the centrifugal mold that these fibers are completely embedded in the plastic after the centrifugal process. 2. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass die Schleuderform während des Schleuderns geheizt wird. 2. The method according to claim I, characterized in that the centrifugal mold is heated during the spinning. 3. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass als Kunststoff ein schnellhärtendes Epoxyharz verwendet wird. 3. The method according to claim I, characterized in that a fast-curing epoxy resin is used as the plastic. 4. Einrichtung nach Patentanspruch II, dadurch gekennzeichnet, dass die Schleuderform leicht auswechselbar auf der rotierenden Spindel gehalten ist. 4. Device according to claim II, characterized in that the centrifugal mold is held easily replaceable on the rotating spindle. 5. Einrichtung nach Patentanspruch II, dadurch gekennzeichnet, dass die Ausstossvorrichtung axial durch die rotierende Spindel hindurchgeführt ist. 5. Device according to claim II, characterized in that the ejection device is passed axially through the rotating spindle. 6. Einrichtung nach Patentanspruch II, dadurch gekennzeichnet, dass die Heizvorrichtung die Form eines Hohlzylinders aufweist, der während der Aushärtezeit des Kunststoffes über die Schleuderform schiebbar ist. 6. Device according to claim II, characterized in that the heating device has the shape of a hollow cylinder which can be pushed over the centrifugal mold during the curing time of the plastic. 7. Einrichtung nach Patentanspruch II und Unteranspruch 6, dadurch gekennzeichnlet, dass die Einfüllvorrichtung ausschwenkbar angeordnet ist, um das Einbringen der Armaturen in die Schleuderform und das Herunterschieben der Heizvorrichtung nicht zu behindern. 7. Device according to claim II and dependent claim 6, characterized gekennzeichnlet that the filling device is arranged to be pivotable in order not to hinder the introduction of the fittings into the centrifugal mold and the pushing down of the heating device. 8. Einrichtung nach Patentanspruch II und Unter- ansprüchen 4, 5, 6 und 7, dadurch gekennzeichnet, dass wenigstens zwei Schleuderformen so angeordnet sind, dass sie gleichzeitig benützt werden können, indem abwechslungsweise in die eine Form die Armaturen und Verstärkungsgewebe eingebracht werden, während die andere Form geschleudert und geheizt wird. 8. Device according to claim II and subclaims 4, 5, 6 and 7, characterized in that at least two centrifugal molds are arranged so that they can be used at the same time by alternately introducing the fittings and reinforcing fabric into one mold while the other form is spun and heated. 9. Einrichtung nach Patentanspruch II und Unteransprüchen 4, 5, 6, 7 und 8, dadurch gekennzeichnet, dass Steuerorgane vorhanden sind, um die einzelnen Operationen, das heisst das Einbringen der Armaturen und Einfüllen der vorbestimmten Menge flüssigen Kunststoffes in die Form, das Schleudern und Heizen der Form sowie das Ausstossen des Kunststoffkörpers aus der Form, wenigstens zum Teil automatisch zu vollziehen. 9. Device according to claim II and subclaims 4, 5, 6, 7 and 8, characterized in that control elements are provided to the individual operations, that is, the introduction of the fittings and filling the predetermined amount of liquid plastic in the mold, the centrifugation and heating the mold and the ejection of the plastic body from the mold, at least partially to be carried out automatically.
CH8045359A 1959-11-10 1959-11-10 Process for the production of a tubular plastic body provided with an external metal armature and device for carrying out the process CH373170A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2292623A1 (en) * 1974-11-26 1976-06-25 Aerospatiale PROCESS FOR THE REALIZATION OF RESISTANT COMPOSITE STRUCTURES, IN PARTICULAR FOR AERODYNES AND STRUCTURES THUS OBTAINED
WO2000003857A1 (en) * 1998-07-13 2000-01-27 Fröhle Med. Techn. Formteile Gmbh Arrangement of a rotary device
EP1072372A1 (en) * 1999-07-21 2001-01-31 Plastop S.A.S Apparatus for the rotary moulding of plastic materials
WO2010012254A1 (en) * 2008-07-29 2010-02-04 Schaeffler Kg Plain bearing bushing and method for the production thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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